I was lucky to get strong sunlight in the right position to shine under the dash and light up a recessed bolt on the black box BMRFIXIT referred to. I wasn't able to see it at first due to the clutter of wires in the way and because it was pretty far in there. After unscrewing this bolt it was relatively easy to get the connectors undone.
The replacement part I got from one parts store wasn't the right one and the second one they ordered was wrong as well. I gave up on them and got my money back.
I finally got the right part from NAPA ($245!) And finished the job today.
Saturday, November 24th, 2007 AT 8:49 PM